Features: One step auto inflation and deflation; displays systolic blood pressure, diastolic blood pressure and pulse rate in a large, easy-to-read LCD display; optionally averages last 3 readings for optimal accuracy. Simple operation and show your blood pressure and pulse number accurately, speedily and clearly with small error. Wrist type model with simple operation of just 1 button push. Automatic determines ideal cuff inflation. Compact size, the blood pressure wrist cuff monitor with portable carry case is convenient for you to use at home, in the office or even on the go. The wrist blood pressure cuff will automatically display and alert you if an irregular heartbeat is detected. Descriptions: This newly-updated and advanced portable blood pressure monitor allow you to check your blood pressure anywhere, anytime and still get the precise readings you need. High & low pulse rate indicators. Optionally averages last 3 readings for optimal accuracy. Warning heart blinker, shows that the monitor is taking measurement. Specifications: Application: wrist type Wrist circumference: 135 ~ 195 mm. Measurement Range: Blood Pressure: 20 ~ 280 mmHg Pulse Rate: 40 ~ 165 times/ min Blood Pressure: within 3 mmHg or 2% Pulse rate: 5% of measured data Operation temperature and humidity: +10~+40(50F-104F), 40%-85% R.H. Preservation temperature and humidity:-20~+50(-4F-122F), 15%-90&R.H. Material: plastic Size:70*72.6*32.5mm(L*W*H) Box size: 88*86*75mm Package size: 95*93*93mm Power supply: 2 x AAA alkaline batteries (not included) Display: LCD Color:White Packing content: 1 x Wrist Type Blood Pressure Monitor 1 x White Carry Case 1 x Packing Box Notes: Please allow 0-2mm error due to manual measurement, thanks for understanding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you